The IT department receives a client request to build multiple file server instances. Which of the following is the MOST efficient way for a cloud systems administrator to fulfill this request?

Building from an OEM DVD requires manual, sequential OS installation on each server, making it highly inefficient for bulk provisioning.

Restoring from backup is a disaster recovery operation intended to recover a specific prior state, not to efficiently provision new standardized server instances at scale.

Templates are useful in virtualization platforms for cloning VMs, but booting from a SAN image is more broadly efficient because it supports both physical and virtual servers at the centralized storage layer.

Boot-from-SAN (BfSAN) stores a single master OS image on a SAN volume that multiple servers can boot from directly, eliminating local disk installation and enabling simultaneous rapid provisioning of many identical instances. This approach reduces deployment time significantly, ensures all instances are identical, and centralizes management of the base image compared to manual or backup-based methods.